Brazilian attitude toward sex [...] is much less permissive than it appears.
Pulsões podem ser recalcadas na contracapa da psique, mas raramente sem consequências.
One possible explanation for this contradiction posits that Brazilians are exibitionists [sic] about sex and sexuality. [...]
Exhibitionism that one sees on beaches throughout the year and on streets during Carnival, and this exhibitionism may be acceptable because it serves as a means of escaping from pressures imposed by traditional values.
Joseph A. Page
In: The Brazilians. Da Capo Press, 1995. Ch. 17, p. 438.